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400G/800G RoCE Switches
400G and 800G Ethernet switches for a lossless RoCEv2 AI fabric — congestion-free, low-latency AI cluster networking with PFC/ECN.
400G/800G Ethernet switches form the backbone of a lossless RoCEv2-based AI fabric. With PFC and ECN configuration they carry GPU traffic without congestion, scaling efficiently in high-density spine-leaf architectures within limited rack space.
Key Features
- 800G ports (OSFP) — 51.2T capacity on Tomahawk 5-class silicon
- 400G ports (QSFP-DD) — high density for flexible spine-leaf architectures
- PFC/ECN — end-to-end flow control for lossless RoCEv2 traffic
- DLB (Dynamic Load Balancing) — dynamic load balancing for storage and compute traffic
- MLAG — redundant, flexible expansion
Use Cases
- Lossless compute fabric in 400G/800G AI training clusters
- 100G/200G storage networks — NVMe-oF and BeeGFS parallel file systems
- Unified management and simple commissioning on the open Ethernet ecosystem
- Lower TCO leveraging existing Ethernet operations expertise
Configuration and Procurement
Switch selection is based on port speed, buffer capacity, ECN/PFC support and cluster scale. Mevasis includes RoCEv2 tuning (ECN thresholds, PFC deadlock prevention) and acceptance testing as part of deployment.
Pricing is not published as a list; contact us for project-specific configuration and quotations.